As Secretary of State, Hillary Clinton used a personal email address when conducting official business rather than using a government address. What impact will the disclosure have on Clinton's reputation as she considers a presidential bid?

The Selma-to-Montgomery marches might not have happened if not for the death of Jimmie Lee Jackson a few weeks before in Marion, Ala. NPR returned to Marion as people remembered Jackson and how his death was a catalyst for many other civil rights events in 1965.

The president's signature accomplishment ? the Affordable Care Act ? faces yet another critical test. On Wednesday the Supreme Court will hear arguments on whether Congress intended for the federal health insurance exchange to offer the same subsidies available to those in state exchanges.